Connecting device



Jan. 5, 1932. T, VAN TUYL 1,839,279

CNNEGTING DEVICE` Filed MaIOh 14, 1929 .rmmdJmaicaa UNITED sfra'rasvPn'nazN'r or-'Flcs mom van run.,

Ol' OAK Pm ILLINOIS, ASSIGNOB Told-LY IANUFACTUBING COMPANY, ACORPORATION F ILLINOIS comerme nnvrcn ppucgapn mec :man 14,1929. sermno. 346,881.1

This invention relates to pi or tube connections, and aims to provi ea-deyice by which a tube or the like may be easily and convenientlyconnected vto another tube or p grim invention may be readily understoodby reference to an lllustrative construction embodying the invention andshown in the accompanying' drawings.

In said drawings: Fig. 1 is an elevation, in.more or less diaatic form,of an internal combustion ellilgile to which the illustrative device isape Fig. 2 is a plan'view of the connecting de vice' Fig. 3 is a sectionof the Vdetail thereof taken on the line 3-3 of Fi 2;'

Fig. i is a view of anot er detail taken alongthe line 4-4 of Fig. 2;

F 5 is a plan view of a connecting device illustrating how the inventionmay he a plied to a twin assage construction,em p oyed, for examp e, inconnection with double throated or double carbureters;

Fig.. 6 is a section taken along the line 6-6 of Fig.. ii.

As shown in the drawings, the invention is embodied for illustration, ina device .for making a connection with the suction manifold of aninternal combustion engine. Devices of this character are particularladvantageous where the suction manifold 1s not provided with means formaking a suction connection as is the case in some constructions) orwhere t e design is such that a connection cannot be made at the jointbetween the manifold and respondin to the communicating carbureter maniold passages and bolt holes 14 corresponding position and number tothose in the coupling flanges.` The insert 10 is ad.-

vantageously made of sheet brass, in this case about one-sixteenth of aninch (11K) thick, a thickness which permits the application ofthe'insert without requiring any substantiallvl greater separation thannormal, between the iianges 11 and 12. Communicating with the opening 13is a' conduit member 15 of the same thickness as the insert, with whichis associated a tube or pipe 16 leading to whatever device or devices itis desired to connect with the engine suction. 4In the present instanceI have illustrated the tube 16 as being connected with a lubricator 17designed to supply regular but minute quantities of lubricant to theupper cylinder walls and valves, through the intake manifold.

In the present instance the conduit member is inserted in a transverselyextending recess in the insert, in this case represented by the openslot 18. This slot extends to a, point 19 corresponding with the normaloutline of the insert. This insert is provided with means forrmlyconnecting together the portions by slitting the projection atv 21 andoppositely arching or stretching the members 22 and 23 f to provide apassage 24 in line with the slot 18 through which the cylindricalextremity member may advantageously be assembled with the insert in thefollowing manner s The conduit member, initially a piece of ordinarytubing, is inserted through the opening 24 l 25 of the conduit mayextend. The conduit into the slot 18 and in such position is attened tothe exact thickness of the insert 10 by an appropriate press. The actionof the press serves not only to sha e the conduit member so that itssurfaces w1l1 be flush with the insert but presses the side edges of theconduit into close engagement throughout, with the side edges 26 of theslot 18. The

tendency of the slot to open up during this operation (and therebydistort .the insert or to destroy its surface continuity) ispre'ventedby the connecting members 22 and 23 which are preferably arched to fitclosely-around' the conduit and thereby to be sup rted against iatteningunder forces tending to .widen the slot. The'conduit is advanta eouslysoldered or brazed as at 27 to the bn ging strips 22 and 23 and isadvantageousl made of brass (as distinguished from copperl7 to providethinner walls 28 (of adequate strength) than those of other types oftubing, thereby permitting a conduit passa e 29 of maximum crosssection. The brass tu ing may advantageously extend only to the edge ofthe insert and there be connected with the tube 16 which may be anordinary co per or other tube whose extremity is inserte inside andsoldered or brazed to the brass conduit.

The slot is adjusted in width, and the tube 15 in diameter, to suit thedesired area of the assage 29, which is not, therefore, practica lylimited in eii'ective size by the thinness of the insert.

The above described pressing action by which the conduit member 15 1sforced to conform with the dimensions in the slot 18 produces flush andcontinuous upper and lower surfaces to the insert member,- therebyeliminating any opportunity for leakage between the insert and the upperand lower sealing means 31 and 32 which may be thin gaskets or layers ofplastic sealing material, or both. Such sealing layers mayadvantageously comprise a coating of so-called insulating varnish whichremains slightly soft and lexible and never becomes hard or brittle. Tothe varnish coating (which is applied to thevsurfaces of the insert) isapplied a coating of soapstone or graphite which renders the varnishcoating non-adhesive to prevent sticking to any surface with which itcomes in contact and makes it possible to supply the inserts alreadycoated. Such coating also contributes to the sealing qualities of thesealin layers.

The above described construction permits the connection of a suctiontube with the intake manifold in constructions which are not providedwith the usual fitting tapped into the intake manifold. The relativelythin gauge of the insert permits its application to constructionswherein the carbureter cannot conveniently be lowered or separated fromthe iange 11 by a distance greater than that ordinarily allowed for agasket, yet it is of adequate strength and provides a suction passagewhose eective size is not limited by the thinness of the insert.

In Fi 5 and 6 is illustrated the application o the invention to acarbureter and intake manifold having twin passages assotween thepassages, the insert is slotted as at 35 and 36 to receive the flattenedconduit member 37 whose cylindrical extremity 38 projects between lbridging or connecti strips 39 and 40, similar in construction addfunction to the members 22 and 23. The conduit member 37 isadvantageously assembled with the insert 33 in the same manner asdescribed in connection with the construction shown in Fig. 2, namely,the tube is attened under a confining pressure so as to conform exactlywith the slots 35'and 36 and to provide flush and continuous surfacesfor the insert. The interior passage 41 of the conduit is made tocommunlcate with the twin openin into the sides edges of the flattenedtube. These notches should be large enough to provide openings at leastaggregating the cross section of the passage 41.

The brass conduit advantageously termi-` nates at the edge of the insertand a copper or other tube 43 is connected thereto in the same manner asdescribed in connection with the construction of Fig. 2.

Obviously the invention is not limited to the details of theillustrative device since these may be variousl modified. Moreover it isnot indispensabile that all features of the invention be used conjointlysince certain features ma be advantageously employed in various di erentcombinations and subcombinations.

Having described an embodiment of my invention, I claim:

1. A device of the character described comprising in combination a metalgasket-like surfaces ush with those of the insert to provide continuousgasket surfaces,said offset portions of said insert extending overopposite sides of said tube to serve as bridge pieces for preventing thespreading of the sides of said slot, said odset portions lying in theportion of said insert outsideof the gasket area.

2. The method of making a gasket-like insert having a connectingpassage, 'which is characterized by forming an open slot in said insertextending from the gasket opening toward the side of the insert, theniiattening the sides of a tube in said slot so as completely to ll thelatter and to bring the outer surfaces of said tube flush with those ofthe insert and simultaneously preventing a 34 by notches or recesses 42cut lll widening of Said Slat during the flattening of said tube.

3. A device of the character described,

comprising in combination a gasket-like insert of relatively thin gaugeformed with an opening and being cut away to form a slot extending 4fromsaid opemn toward the edge of the insert, a fiat side thickness to thatof said insert and fitting tightly in said slot to provide continuousush upper and lower gasket surfaces for said insert, and] a bridgeacross said tube from one side to the other of said slot to prevent thespreadin of said slot, said bridge piece being locate outside the areacomprising the gasket surfaces.

4. A device of the character described, comprising in combination agasket-like insert of relatively thin gauge formed with an opening andbeing cut away to form a slot extendingh from said opening toward theedge of t e insert, a Hat sided tube equal 'in thickness to that of saidinsert and fitting tightly in said slot to provide continuous iush uppersaid insert, and a portion of said insert lying in line with said slotbeing o'set to provide a bridge piece across said tube to prevent thespreading of said slot, said bridge piece be ing located outside the'area com rising the gasket surfaces, the gasket sur aces being coatedwith a non-adhesive sealing material.

ln testimony whereof, E have signed my name to this specication.

THOMAS VAN TUYL.

tube equal inpiece extending and lower gasket surfaces for

